package filter;

import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.DispatcherType;
import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.annotation.WebFilter;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpSession;

@WebFilter(dispatcherTypes = {
		DispatcherType.REQUEST,
		DispatcherType.FORWARD
}
,urlPatterns = {"/view/*"})
public class SessionCheckFilter implements Filter {
	public void destroy() {		
	}
	public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException {
		HttpSession session=((HttpServletRequest)request).getSession();
		if(null!=session.getAttribute("name")) {
			chain.doFilter(request, response);
		}else {
				PrintWriter out=response.getWriter();
				out.print("<script>parent.window.location.href='"+request.getServletContext().getContextPath()+""+"</script>");
				out.close();
		}		
	}	
	public void init(FilterConfig fConfig) throws ServletException {
	}
}
